Owner's Manual and Installation Guide 5/3 Channel Power Amplifiers 255, 355, 555
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2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
17.
18.
19.
20.
21.
22.
KEY TO
CALLOUTS
Power LED
-
Indicates amplifier power.
Subsonic
/
Hawkins Bass Control Switch
-
Select “SUB SONIC” to
engage the Sub Sonic filter at
13
Hz. Select “HAWKINS BASS CONTROL”
to engage the subwoofer channel’s high pass filter
@
45 Hz with
+6
dB
boost for optimum bass.
High Pass XOVER Switch
-
(Channels l&Z) Select “IN” for use with the
internal crossover or “OUT” for use with external crossover.
High Pass XOVER Switch
-
(Channels
3&4)
Select “IN” for use with the
internal crossover or “OUT” for use with external crossover.
Subwoofer Channel Input Select
-
Selectable inputs; “CH 1-4” for non-
fading bass control,
“CH
3&4”
for rear fading bass control.
Channels
3814
Input Select
-
Selectable inputs from internal (CH
l&2)
or external (CH
3&4
local RCA inputs).
Amp Mode Switch
-
(Channels 1-4) Select
“3CH”
for bridged mono output
in 3 channel operation (use channels 1
&
2). Select
“5CH”
for stereo
output in 5 channel operation.
Inputs
-
Right and left channel RCA inputs for channels
3&4.
Input Level
-
Channels
3&4
input level control.
High Pass Filter Control Adjustment
-
(Channels
3&4)
crossover fre-
quency control for the internal high pass filter.
tnputs
-
Right and left channel RCA inputs for channels
l&2.
Input Level
-
Channels
l&2
input level control.
High Pass Filter Control Adjustment
-
(Channels
l&2)
crossover fre-
quency control for the internal high pass filter.
Low Pass Filter Control Adjustment
-
(Subwoofer Channel) crossover
frequency control for the internal low pass filter.
Sub Input Level
-
Subwoofer channel input level control.
Speaker Connection Terminal
-
Speaker connections for Subwoofer
Channel.
Speaker Connection Terminal
-
Speaker connections for Ch’s
3&4.
Speaker Connection Terminal
-
Speaker connections for Ch’s
l&2.
REMOTE
-
Remote turn-on input from the head unit. Accepts
+12V.
GND
-
Main ground connection.
Bolt to a clean chassis point in the ve-
hicle.
+12V
-
Connected to a fuse or circuit breaker, then to the battery’s posi-
tive terminal.
Main Fuse
-
Main power supply fuses.